I kinda knew what you meant but wasn't sure they did that stuff in cotton!

Uncle Google tells me that it does exist then I thought of the number of skate belts I used to own! It comes under upholstery so a fabric shop or craft shop may be the wrong place to look! If you're struggling with the colour, could you not but some white webbing and dye it, seeing as you're after cotton? That's my solution for everything at the moment!

It seems widely available on the internet, so maybe you could have a look for the colour you want! I found a couple of white ones on ebay, assuming its a belt you want! The buckles are easy enough to take off!